Standards

JB/T 7948.10-1999 Abolished

JB/T 7948.10-1999 Melting flux chemical analysis method - combustion-coulomb method for carbon determination

Publish Date: 1999-06-24

JB/T 9177-1999 Abolished

JB/T 9177-1999 Steel die-casting components structural elements。

Publish Date: 1999-06-24

JB/T 9178.1-1999 Abolished

JB/T 9178.1-1999 Free forging parts for hydraulic press general technical specification

Publish Date: 1999-06-24

JB/T 9175.2-1999 Abolished

JB/T 9175.2-1999 Precision punching parts quality

Publish Date: 1999-06-24

JB/T 9175.1-1999 Abolished

JB/T 9175.1-1999 Precision stamping component Structural processability

Publish Date: 1999-06-24

JB/T 4290-1999 Abolished

JB/T 4290-1999 JBT 4290-1999 High-speed tool steel forged parts - Technical specification。

Publish Date: 1999-06-24

JB/T 9180.1-1999 Abolished

JB/T 9180.1-1999 Tolerance for Steel Cold Extrusion Part

Publish Date: 1999-06-24

JB/T 4381-1999 Abolished

JB/T 4381-1999 Stamping and cutting blanking Tolerances on dimensions not otherwise specified Limiting deviation

Publish Date: 1999-06-24

JB/T 9180.2-1999 Abolished

JB/T 9180.2-1999 JBT 9180.2-1999 Steel cold extrusion parts general technical specification

Publish Date: 1999-06-24

JB/T 4394-1999 Abolished

JB/T 4394-1999 JBT 4394-1999 Rare Earth Magnesium Alloy Chemical Analysis Method for Total Rare Earth Content, Silicon, and Magnesium

Publish Date: 1999-06-24

JB/T 7946.4-1999 Abolished

JB/T 7946.4-1999 Mold aluminum alloy metallography (Mold Al-Cu alloy grain size) JB/T 7946.4-1999

Publish Date: 1999-06-24

JB/T 3829-1999 Abolished

JB/T 3829-1999 JB/T 3829-1999 Worm-cast Iron Microstructure

Publish Date: 1999-06-24